Malicious PDF — malware analysis report

Static analysis result for SHA-256 40b6dc69b00c1753…

MALICIOUS

PDF

107.8 KB Created: 2020-08-17 15:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 996343d284ab04f4756aacd48010e032 SHA-1: 4b86ff00283ffeb4f4ef6589c45efc5898a1307e SHA-256: 40b6dc69b00c175380df81dc0d37130c6d295e748f0c193c09e81fae562eec35
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a movie download lure and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or distribution network. The SE_PASSWORD_ARCHIVE_LURE heuristic suggests a common tactic to bypass gateway security by instructing the user to decrypt a payload.

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=anarkali+malayalam+movie++utorrent
    • http://files.destinationtravelco.com/uploads/1/3/2/6/132681209/ba21152aefb73c.pdf
    • http://sokadamo.newlightwater.com/uploads/1/3/1/6/131607712/1296822.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/39789141560.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/canon_eos_rebel_t7i_800d_for_dummies_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/vudekadezikuzapum.pdf
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/sword_art_online_minecraft_server.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/90906545855.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6695/files/synthesis_of_nalidixic_acid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/blood_type_o_positive_weight_loss_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/silabus_biologi_sma_ktsp.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/78567253040.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/50159900695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000145a7.bin
3590546650837eadc1d680d3fd11522ad55f0f9632578599ed35a5705537122f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145A7 4868 bytes
font_01_sfnt_off00015622.bin
15c21a18b557726b5637611d30b448dca46c3a99e5463ff72de01cb644a1585d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15622 17512 bytes
font_02_sfnt_off00018bfb.bin
b6b7f901ace08fc5bcdac8827c351b340e918a7fe51572d7bc4ba752988caa76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18BFB 16384 bytes

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